Not sure if anyone else has posted this or even experienced this, but the "Quests completed for Thieves Guild" number in the General Stats keeps cycling back and I can get it to progress. I will start a misc mission with Vex or Delvin, and once I complete it I turn it in and they say thanks and give me gold as a reward. The problem is that my number of completed quests with them will either stay the same or count backwards. I have about 60 hours in the game so far and about 10 of that was just trying to complete the "Special Jobs" for the thieves guild so that I could get the One with the Shadows achievement. I've visited every city and all the main holds, started and completed different quest lines and tried everything I can to get this to reset or fix itself but nothing works. I have the blacksmith, alchemist, and general goods shops in the Flaggon but I can't progress further.
If any reps from Bethesda read this please have someone look into the issue.
Thank you.
Almost forgot. I'm having these issues AFTER having completed the main Thieves Guild quest line. I've already done all the Nocturnal stuff.